Exterior surface of a portion of a shoe sole



FIG. 1 is a side elevational view of one side of an exterior surface of a portion of a shoe sole showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a perspective view thereof;

FIG. 5 is a cross sectional view taken through line 5--5 of FIG. 1; and,

FIG. 6 is a cross sectional view taken through line 6--6 of FIG. 1.

The broken line showing of the circular regions and remainder of the shoe is for illustrative purposes and forms no part of the claimed design. 

The ornamental design for an exterior surface of a portion of a shoe sole, as shown and described. 